# Grande Portage Resources Announces Results of Preliminary Economic Assessment \(PEA\) Study for the New Amalga Gold Project in SE Alaska Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6 Original source: https://money.tmx.com/en/quote/GPG/news/6289823063428389/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe Publisher: tmx Original announcement: 2026-04-15T08:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Grande Portage Resources Ltd. - Ticker: GPG - Exchange: TSX - Region: Southeast Alaska, USA - Primary commodity: Gold - Secondary commodities: Silver - Document categories: Resource update, Other - Extracted: 2026-09-16 02:59:30 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Grande Portage Resources announced positive results from a Preliminary Economic Assessment \(PEA\) for its New Amalga Gold Project in Southeast Alaska, showing a pre-tax NPV5 of US$979 million and an IRR of 69% at a US$3,200/oz gold price. The PEA outlines a low-initial-capital, underground mining operation with offsite processing, utilizing a previously disclosed NI 43-101 compliant resource estimate from July 2024. Reasoning: The Preliminary Economic Assessment for the New Amalga Gold Project demonstrates robust economics with a high IRR and NPV, driven by a low-initial-capital, offsite processing strategy, though it is preliminary and relies on a previously disclosed resource with inferred components. - Positive factor: robust NPV and IRR - Positive factor: low-initial-capital scenario - Positive factor: rapid payback - Positive factor: offsite processing strategy - Positive factor: strong economics at current gold prices - Positive factor: NI 43-101 compliant resource - Negative factor: preliminary in nature - Negative factor: includes inferred Mineral Resources - Negative factor: no Mineral Reserve at this time - Negative factor: resource estimate is historical for this PEA Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 12 ## Classification and evidence **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The Preliminary Economic Assessment and the underlying resource estimate are stated to be National Instrument 43-101 compliant. Evidence · text > A National Instrument 43-101 - Standards of Disclosure for Mineral Projects \("NI 43-101"\) compliant technical report **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: Multiple Qualified Persons are named and responsible for various sections of the NI 43-101 compliant PEA report, including the resource estimate. Evidence · text > The Report ... will be prepared by the following Qualified Persons \(as defined under NI 43-101\), all of whom are independent of the Company **Preliminary Study** Polarity: negative Story-specific tag Definition: No canonical definition is currently available. Why it applies: The document explicitly states that the PEA Report is preliminary in nature and includes inferred Mineral Resources. Evidence · text > The PEA Report is preliminary in nature; it includes inferred Mineral Resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as Mineral Reserves **Positive Economics** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: The PEA reports a robust pre-tax NPV5 of US$979 million and an IRR of 69% at the base case gold price. Evidence · table > $979 Context: Pre-Tax NPV 5 **Low Initial Capital** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: The PEA highlights a low-initial-capital scenario with pre-production CAPEX of US$254.8 million. Evidence · text > Pre-Production Capital Cost \(CAPEX\) of US$254.8M **Rapid Payback** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: The PEA indicates a rapid after-tax payback period of 1.3 years at the base case gold price. Evidence · table > 1.3 Context: Initial Capital Payback Period \(after-tax\) **Offsite Processing** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: The project strategy involves offsite processing at third-party facilities, eliminating the need for onsite processing or tailings storage. Evidence · text > selective underground mine transporting material offsite for processing at third-party facilities. **No Onsite Tailings** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: The offsite processing strategy eliminates the need for a tailings disposal facility at the site. Evidence · text > Eliminates the need to develop a tailings disposal facility at the site, as no tailings would be generated. **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: The resource estimate is explicitly stated as being utilized for the Preliminary Economic Assessment. Evidence · text > The PEA utilizes the previously-released Mineral Resource Estimate **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: The resource estimate includes a significant portion of Inferred Mineral Resources, which are considered too speculative geologically for economic considerations. Evidence · text > it includes inferred Mineral Resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as Mineral Reserves ## Extracted facts Stored fact records: 12. Some facts used in scoring do not have a stored record. ## Resource Estimates (12) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-0) New Amalga Gold Project · gold Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: gold - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:e9e0c54edc1e5f047f5a #### Resource Data - Category: indicated - Tonnes: 3931000 - Grade: 10.83 - Grade Unit: g/t - Contained Metal: 1368400 - Contained Unit: oz - Cutoff Grade: 3 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This indicated gold resource, while historical for this PEA, shows high grades and is NI 43-101 compliant with QP sign-off, providing a solid basis for the economic assessment. - Positive factor: high gold grades - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: resource estimate is historical for this PEA Evidence · table > 10.83 Context: 3,931,000 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-1) New Amalga Gold Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: silver - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:e9e0c54edc1e5f047f5a #### Resource Data - Category: indicated - Tonnes: 3931000 - Grade: 6.6 - Grade Unit: g/t - Contained Metal: 834600 - Contained Unit: oz - Cutoff Grade: 3 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This indicated silver resource, while historical for this PEA, is NI 43-101 compliant with QP sign-off, contributing to the overall project economics. - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: resource estimate is historical for this PEA Evidence · table > 6.60 Context: 3,931,000 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-2) New Amalga Gold Project · gold Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: gold - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:6afdd9f53e9f3ff4f288 #### Resource Data - Category: indicated - Tonnes: 4726000 - Grade: 9.47 - Grade Unit: g/t - Contained Metal: 1438500 - Contained Unit: oz - Cutoff Grade: 2.5 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This indicated gold resource, while historical for this PEA, shows high grades and is NI 43-101 compliant with QP sign-off, providing a solid basis for the economic assessment. - Positive factor: high gold grades - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: resource estimate is historical for this PEA Evidence · table > 9.47 Context: 4,726,000 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-3) New Amalga Gold Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: silver - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:6afdd9f53e9f3ff4f288 #### Resource Data - Category: indicated - Tonnes: 4726000 - Grade: 5.86 - Grade Unit: g/t - Contained Metal: 891000 - Contained Unit: oz - Cutoff Grade: 2.5 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This indicated silver resource, while historical for this PEA, is NI 43-101 compliant with QP sign-off, contributing to the overall project economics. - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: resource estimate is historical for this PEA Evidence · table > 5.86 Context: 4,726,000 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-4) New Amalga Gold Project · gold Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: gold - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:7f925de8830618744480 #### Resource Data - Category: indicated - Tonnes: 5654000 - Grade: 8.28 - Grade Unit: g/t - Contained Metal: 1505500 - Contained Unit: oz - Cutoff Grade: 2 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This indicated gold resource, while historical for this PEA, shows high grades and is NI 43-101 compliant with QP sign-off, providing a solid basis for the economic assessment. - Positive factor: high gold grades - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: resource estimate is historical for this PEA Evidence · table > 8.28 Context: 5,654,000 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-5) New Amalga Gold Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: silver - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:7f925de8830618744480 #### Resource Data - Category: indicated - Tonnes: 5654000 - Grade: 5.21 - Grade Unit: g/t - Contained Metal: 946900 - Contained Unit: oz - Cutoff Grade: 2 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This indicated silver resource, while historical for this PEA, is NI 43-101 compliant with QP sign-off, contributing to the overall project economics. - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: resource estimate is historical for this PEA Evidence · table > 5.21 Context: 5,654,000 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-6) New Amalga Gold Project · gold Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: gold - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:c0f6e3df0a6827713446 #### Resource Data - Category: inferred - Tonnes: 1562000 - Grade: 9.82 - Grade Unit: g/t - Contained Metal: 493300 - Contained Unit: oz - Cutoff Grade: 3 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This inferred gold resource, while historical for this PEA, shows high grades and is NI 43-101 compliant with QP sign-off, but carries a lower confidence due to its inferred classification. - Positive factor: high gold grades - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: significant inferred component - Negative factor: resource estimate is historical for this PEA Evidence · table > 9.82 Context: 1,562,000 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-7) New Amalga Gold Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: silver - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:c0f6e3df0a6827713446 #### Resource Data - Category: inferred - Tonnes: 1562000 - Grade: 7.34 - Grade Unit: g/t - Contained Metal: 368400 - Contained Unit: oz - Cutoff Grade: 3 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This inferred silver resource, while historical for this PEA, is NI 43-101 compliant with QP sign-off, but carries a lower confidence due to its inferred classification. - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: significant inferred component - Negative factor: resource estimate is historical for this PEA Evidence · table > 7.34 Context: 1,562,000 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-8) New Amalga Gold Project · gold Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: gold - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:01bb86a15ce92679d830 #### Resource Data - Category: inferred - Tonnes: 1813000 - Grade: 8.58 - Grade Unit: g/t - Contained Metal: 515700 - Contained Unit: oz - Cutoff Grade: 2.5 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This inferred gold resource, while historical for this PEA, shows high grades and is NI 43-101 compliant with QP sign-off, but carries a lower confidence due to its inferred classification. - Positive factor: high gold grades - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: significant inferred component - Negative factor: resource estimate is historical for this PEA Evidence · table > 8.58 Context: 1,813,000 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-9) New Amalga Gold Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: silver - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:01bb86a15ce92679d830 #### Resource Data - Category: inferred - Tonnes: 1813000 - Grade: 6.7 - Grade Unit: g/t - Contained Metal: 390600 - Contained Unit: oz - Cutoff Grade: 2.5 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This inferred silver resource, while historical for this PEA, is NI 43-101 compliant with QP sign-off, but carries a lower confidence due to its inferred classification. - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: significant inferred component - Negative factor: resource estimate is historical for this PEA Evidence · table > 6.70 Context: 1,813,000 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-10) New Amalga Gold Project · gold Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: gold - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:88cbe26114992f6d71bf #### Resource Data - Category: inferred - Tonnes: 2383000 - Grade: 7.26 - Grade Unit: g/t - Contained Metal: 556400 - Contained Unit: oz - Cutoff Grade: 2 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This inferred gold resource, while historical for this PEA, shows high grades and is NI 43-101 compliant with QP sign-off, but carries a lower confidence due to its inferred classification. - Positive factor: high gold grades - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: significant inferred component - Negative factor: resource estimate is historical for this PEA Evidence · table > 7.26 Context: 2,383,000 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/grande-portage-resources-announces-results-of-preliminary-economic-assessment-pe--39840231-c189-4603-9a51-93e3eb8936b6#fact-resource-facts-11) New Amalga Gold Project · silver Historical result Needs review: historical\_restatement #### Identity - Project: New Amalga Gold Project - Commodity: silver - Region: usa\_ak - Reported Region: Southeast Alaska, USA - Ticker: GPG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Dr. Dave Webb - Resource group id: resource:88cbe26114992f6d71bf #### Resource Data - Category: inferred - Tonnes: 2383000 - Grade: 5.59 - Grade Unit: g/t - Contained Metal: 428300 - Contained Unit: oz - Cutoff Grade: 2 - Cutoff Unit: g/t #### Prior Estimate - Resource Date: 2024-07-17 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2024-07-17T00:00:00.000Z #### Dates - Event date: 2026-04-15T00:00:00.000Z Reasoning: This inferred silver resource, while historical for this PEA, is NI 43-101 compliant with QP sign-off, but carries a lower confidence due to its inferred classification. - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Negative factor: previously disclosed - Negative factor: significant inferred component - Negative factor: resource estimate is historical for this PEA Evidence · table > 5.59 Context: 2,383,000 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.